SAJ R6 Series User manual

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User Manual
SAJ Solar Inverter
R6-15K/17K/20K/22K/25K-T2-32
R6-25K/30K/33K36K-T3-32
R6-36K/40K/50K-T4-32
R6-5K/6K/8K/10K/15K-T2-32-LV
R6-20K-T3-32-LV
R6-25K/30K-T4-32-LV

R6 Series
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Preface
Thank you for choosing SAJ solar inverter. We are pleased to provide you
first-class products and exceptional service.
This manual includes information for installation, operation, maintenance,
trouble shooting and safety. Please follow the instructions of this manual
so that we can ensure delivery of our professional guidance and
wholehearted service.
Customer-orientation is our forever commitment. We hope this document
proves to be of great assistance in your journey for a cleaner, greener
world.
Please check for the latest version at www.saj-electric.com
Guangzhou Sanjing Electric Co., Ltd.
Building e-Energy Management Solution Provider

R6 Series
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Content
PREFACE................................................................................................. - 1 -
CHAPTER 1 SAFETY PRECAUTIONS........................................ - 5-
1.1 SCOPE OFAPPLICATION ........................................................................... -5 -
1.2 SAFETY INSTRUCTIONS.............................................................................- 5 -
1.3 TARGET GROUP ........................................................................................ - 6-
CHAPTER 2 PREPARATION......................................................... - 6 -
2.1 SAFETY INSTRUCTIONS.............................................................................- 6 -
2.2 EXPLANATIONS OF SYMBOLS ...................................................................- 8 -
CHAPTER 3 PRODUCT INFORMATION ................................... - 9-
3.1APPLICATION SCOPE OF PRODUCTS.........................................................- 9 -
3.2 SPECIFICATION FOR PRODUCT MODEL .................................................-10 -
3.3 OVERVIEW OF PRODUCTS....................................................................... - 10-
3.4 DATASHEET ............................................................................................. - 12-
CHAPTER 4 INSTRUCTIONS FOR INSTALLATION............. - 20 -
4.1 SAFETY INSTRUCTIONS........................................................................... -20 -
4.2 PRE-INSTALLATION CHECK....................................................................-20 -
4.3 THE DETERMINATION OFTHE INSTALLATIONMETHODAND POSITION....- 21 -
4.4 MOUNTING PROCEDURE ........................................................................ - 22-
CHAPTER 5 ELECTRICAL CONNECTION ............................. - 27-
5.1 SAFETY INSTRUCTION FOR HOT-LINE JOB ............................................- 27 -
5.2 SPECIFICATIONS FOR ELECTRICALINTERFACE....................................-28-
5.3AC CONNECTION....................................................................................-30 -
5.5 COMMUNICATION CONNECTION............................................................- 34 -

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CHAPTER 6 DEBUGGING INSTRUCTIONS.............................. - 37 -
6.1 INTRODUCTION OF HMI (HUMAN-MACHINE INTERFACE)...................-37 -
6.2 MONITORING OPERATION......................................................................- 38 -
CHAPTER 7 FAULT CODE AND TROUBLESHOOTING ......... - 44 -
CHAPTER 8 RECYCLING AND DISPOSAL ............................... - 48 -
CHAPTER 9 CONTACT SAJ.......................................................... - 49 -
SAJ WARRANTY POLICY ............................................................. - 50-
WARRANTY CARD ......................................................................... - 53-

R6 Series
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Chapter 1 Safety Precautions
1.1 Scope of Application
This User Manual describes instructions and detailed procedures for installing,
operating, maintaining, and troubleshooting of the following SAJ on-grid inverters:
R6-15K-T2-32；
R6-17K-T2-32；
R6-20K-T2-32；R6-22K-T2-32；
R6-25K-T2-32；
R6-36K-T3-32；
R6-25K-T3-32；
R6-36K-T4-32；
R6-30K-T3-32；R6-33K-T3-32；
R6-40K-T4-32；R6-50K-T4-32
R6-5K-T2-32-LV；
R6-6K-T2-32-LV；
R6-8K-T2-32-LV；
R6-10K-T2-32-LV；
R6-25K-T4-32-LV；
R6-15K-T2-32-LV；
R6-30K-T4-32-LV；
R6-20K-T3-32-LV
Please keep this manual all time available in case of emergency.
1.2 Safety Instructions
DANGER
·DANGER indicates a hazardous situation which, if not avoided, will result in death or
serious injury.
WARNING
·WARNING indicates a hazardous situation which, if not avoided, can result in death or
serious injury or moderate injury.
CAUTION
·CAUTION indicates a hazardous condition which, if not avoided, can result in minor or
moderate injury.
NOTICE
·NOTICE indicates a situation that can result in potential damage, if notavoided.

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1.3 Target Group
Only qualified electricians who have read and fully understood all safety regulations
contained in this manual can install, maintain and repair the inverter. Operators must
be aware of the high-voltage device.
Chapter 2 Preparation
2.1 Safety Instructions
DANGER
·There is possibility of dying due to electrical shock and highvoltage.
·Do not touch the operating component of the inverter, it might result in burning or death.
·To prevent risk of electric shock during installation and maintenance, please make sure that
all AC and DC terminals are plugged out.
·Do not touch the surface of the inverter while the housing is wet, otherwise, it might cause
electrical shock.
·Do not stay close to the inverter while there are severe weather conditions including storm,
lighting, etc.
·Before opening the housing, the SAJ inverter must be disconnected from the grid and PV
generator; you must wait for at least five minutes to let the energy storage capacitors
completely discharged after disconnecting from power source.
WARNING
·The installation, service, recycling and disposal of the inverters must be performed by
qualified personnel only in compliance with national and local standards and regulations.
·Anyunauthorized actions including modification of product functionality of any form may
cause lethal hazard to the operator, third parties, the units or their property. SAJ is not
responsible for the loss and these warranty claims.
·The SAJ inverter must only be operated with PV generator. Do not connect any other
source of energy to the SAJ inverter.
·Besure that the PV generator and inverter are well grounded in order to protect properties
and persons.

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CAUTION
·The solar inverter will become hot during operation. Please do not touch the heat sink or
peripheral surface during or shortly after operation.
·Risk of damage due to improper modifications.
NOTICE
·Public utility only.
·Thesolar inverter is designed to feed AC power directly to the public utility power grid; do
not connect AC output of the inverter to any private AC equipment.

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2.2 Explanations of Symbols
Symbol
Description
Dangerous electrical voltage
This device is directly connected to public grid, thus all work to the inverter
shall only be carried out by qualified personnel.
Danger to life due to high electrical voltage!
There might be residual currents in inverter because of large capacitors. Wait
for 5 minutes before you remove the front lid.
Notice, danger!
This is directly connected with electricity generators and public grid.
Danger of hot surface
The components inside the inverter will release a lot of heat during operation.
Do not touch metal plate housing during operating.
An error has occurred
Please go to Chapter 9 “Troubleshooting” to remedy the error.
This device shall not be disposed of in residential waste
Please go to Chapter 8 “Recycling and Disposal” for proper treatments.
Without Transformer
This inverter does not use transformer for the isolation function.
CE Mark
Equipment with the CE mark fulfills the basic requirements of the Guideline
Governing Low-Voltage and Electro-magnetic Compatibility.
CQC Mark
The inverter complies with the safety instructions from China's Quality Center.
No unauthorized operations or modifications
Any unauthorized operations or modifications are strictly forbidden, if any
defect or damage (device/person) occurs, SAJ shall not take any responsibility
for it.

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Chapter 3 Product Information
3.1 Application Scope of Products
R6-XK-TX-32 / R6-XK-TX-32-LV products are grid-tied three phase inverters
without transformers, and the inverters are important components of grid-tied solar
power systems.
The R6 inverter converts the DC generated by solar panels into AC which is in
accordance with the requirements of public grid and send the AC into the grid,
Figure 3.1 shows the structural diagram of the typical application system of R6
inverter.
Figure 3.1 R6 series application
Name
Description
Remarks
A
Solar panels
Monocrystalline or polycrystalline silicon, and thin-film PV modules
with II protection and need no ground connection
B
Inverters
R6-15k/17K/20K/22K/25K-T2-32 ； R6-25K/30K/33K/36K-T3-
32 ；
R6-36K/40K/50K-T4-32; R6-5K/6K/8K/10K/15K-T2-32-LV;
R6-20K-T3-32-LV; R6-25K/30K-T4-32-LV
C
Metering
equipment
Standard metering tool for measuring the output electric power of
inverters
D
Power grid
TT，TN-C，TN-S，TN-C-S

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3.2 Specification for Product Model
R6 –XK –TX –32 –LV
①②③○
4 ○ 5
① R6 represents for product name.
② XK represents rated power XkW of inverter, for example 4K means 4kW.
③ T means three phase; X represents the inverter has the function of X MPP
trackers.
○
4 32 means that max. DC input current of per MPP tracker is 32A.
○
5 LV means that nominal AC output voltageis 127V(F-N)/220V(F-F).
3.3 Overview of products
The dimensions of R6 series products is shown in Figure 3.2 , Figure 3.3 & Figure
3.4.
Figure 3.2 Dimensions of R6-15K/17K/20K/22K/25K-T2-32;
R6-5K/6K/8K/10K/15K-T2-32-LV

R6 Series
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Figure 3.3 Dimensions of R6-25K/30K/33K/36K-T3-32;
R6-20K-T3-32-LV
Figure 3.4 Dimensions of R6-36K/40K/50K-
T4-32; R6-25K/30K-T4-32-LV

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3.4 Datasheet
R6-15K/17K/20K/22K/25K-T2-32
Model
R6-15K-T2-3
2
R6-17K-T2-3
2
R6-20K-T2-3
2
R6-22K-T2-3
2
R6-25K-T2-
32
Input (DC)
Max. PV Array Power [Wp]@STC
22500
25500
30000
33000
37500
Max. Input Voltage [V]
1100
MPP Voltage Range [V]
180-1000
Nominal Input Voltage [V]
600
Start-up Voltage [V]
200
Max. Input Current [A]
32/32
Number of MPP Trackers
2
Number of Strings per MPP Tracker
2/2
Output (AC)
Rated AC Output Power [W]
15000
17000
20000
22000
25000
Max. Apparent Power [VA]
16500
18700
22000
24200
25000
Rated AC Output Current
[A]@230Vac
21.7
24.6
29
31.9
36.2
Max. AC Output Current [A]
25.0
28.333.3
36.7
41.7
Nominal AC Voltage/ Range [V]
220(F-N)/380(F-F); 180-280(F-N)/312-485(F-F)
NominalACGrid Frequency/Range[Hz]
50, 60/44-55, 54-65
Total Distortion Harmonic [THDi]
< 3%
Power Factor
0.8 leading～0.8 lagging
Feed-in Phases/AC Connection Phases
3/3
Efficiency
Max. Efficiency
98.8%
Euro Efficiency
98.5%
Protection
DCI Monitoring
Integrated
GFCI Monitoring
Integrated
Grid Monitoring
Integrated
AC Grounding Detection
Integrated
AC Short-Circuit Protection
Integrated
DC Insulation Resistance Detection
Integrated
DC Surge Protection
Type III

R6 Series
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AC Surge Protection
Type III
Anti-islanding Protection
AFD
AFCI Protection
Optional
Interface
AC Connection
Terminal Block
DC Connection
MC4
Display
LED+APP (Bluetooth）
Communication Port
RS232+RS485 (RJ45)+DRM(RJ45)
Communication Mode
Wi-Fi/Ethernet//4G
Load Monitoring
24/7 (Optional)
General Data
Topology
Transformerless
Nighttime Power Consumption [W]
<0.6
Operating Temperature Range
-40℃～+60℃
Cooling Method
intelligent fan Cooling
Ambient Humidity
0%～100% non-condensing
Max. Operating Altitude [m]
3000m
Noise [dBA]
<50
Ingress Protection
IP65
Mounting
Rear Panel
Dimensions [H*W*D] [mm]
558*409*234
Weight [kg]
23.7
Warranty [Year]
5 (Standard)/10/15/20/25 (Optional)
Certifications
IEC/EN62109-1/2, EN61000-6-1/2/3/4, IEC61683, IEC60068-2,
IEC62116, IEC61727, PEA/MEA,VDE0126-1-1/A1, CEI 0-21,
VDE-AR-N 4105, AS/NZS4777.2, CQC NB/T 32004, G98/G99, NBR
16149, NBR 16150, C10/11,RD1669,UNE206006,
UNE206007,EN50438

R6 Series
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R6-25K/30K/33K/36K-T3-32, R6-36K/40K/50K-T4-32
Model
R6-25K-T3-
32
R6-30K-T3-
32
R6-33K-T3-
32
R6-36K-T3-
32
R6-36K-T4-
32
R6-40K-T4-
32
R6-50K-T4-
32
Input (DC)
Max. PV Array Power
[Wp]@STC
37500
45000
49500
54000
54000
60000
75000
Max. Input Voltage [V]
1100
MPP Voltage Range [V]
180-1000
Nominal Input Voltage [V]
600
Startup Voltage [V]
200
Max. Input Current [A]
32/32/32
32/32/32/32
Number of MPP Trackers
3
4
Number of Strings per MPP
Tracker
2/2/2
2/2/2/2
Output (AC)
Rated AC Output Power [W]
25000
30000
33000
36000
36000
40000
50000
Max. Apparent Power [VA] 25000
33000
36300
39600
39600
44000
50000
Rated ACOutput Current
[A]@230Vac
36.2
43.5
47.8
52.2
52.2
58
72.5
Max. AC Output Current [A]
41.7
50
55
60
60
66.7
75.8
Nominal AC Voltage/ Range [V]
220(F-N)/380(F-F); 180-280(F-N)/312-485(F-F)
Nominal ACGrid Frequency/
Range [Hz]
50, 60 / 44-55, 55-65
Total Distortion Harmonic [THD]
<3%
Power Factor
0.8 leading～0.8 lagging
Feed-in Phase/AC Connection
Phases
3/3
Efficiency
Max. Efficiency
98.8%
Euro Efficiency
98.5%
Protection
DCI Monitoring
Integrated
GFCI Monitoring
Integrated
Grid Monitoring
Integrated
AC Grounding Detection
Integrated
AC Short-Circuit Protection
Integrated
DC Insulation Resistance
Detection
Integrated
DC Surge Protection
Type II
AC Surge Protection
Type III

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Anti-islanding Protection
AFD
AFCI Protection
Optional
Interface
AC Connection
Terminal Block
DC Connection
MC4
Display
LED+APP (Bluetooth）
Communication Port
RS232+RS485 (RJ45)+DRM(RJ45)
Communication Mode
Wi-Fi/Ethernet//4G
Load Monitoring
24/7 (Optional)
General Data
Topology
Transformerless
Nighttime Power Consumption [W]
<0.6
Operating Temperature Range
-40℃～+60℃
Cooling Method
intelligent fan Cooling
Ambient Humidity
0%～100% non-condensing
Max. Operating Altitude [m]
3000m
Noise [dBA]
<50
Ingress Protection
IP65
Mounting
Rear Panel
Dimensions [H*W*D] [mm]
659.4*473*240
Weight [kg]
35.5
37
37.5
Warranty [Year]
5 (Standard)/10/15/20/25 (Optional)
Certifications
IEC/EN62109-1/2, EN61000-6-1/2/3/4, IEC61683, IEC60068-2, IEC62116,
IEC61727, PEA/MEA,VDE0126-1-1/A1, CEI 0-21, VDE-AR-N 4105,
AS/NZS4777.2, CQC NB/T 32004, G98/G99, NBR 16149, NBR 16150,
C10/11,RD1669,UNE206006, UNE206007,EN50438

R6 Series
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Note:
1.The above parameters might be slightly modified according to different gridcodes.
2.If you need more information about our product certifications, please contact oursales.

R6 Series
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R6-5K/6K/8K/10K/15K-T2-32-LV
Model
R6-5K-T2-
32-
LV
R6-6K-T2-32-
LV
R6-8K-T2-32-
LV
R6-10K-T2-32-
LV
R6-15K-T2-32-
LV
Input (DC)
Max. PV Array Power [Wp]@STC
7500
9000
12000
15000
22500
Max. Input Voltage [V]
1100
MPP Voltage Range [V]
180-1000
Nominal Input Voltage [V]
600
Start-up Voltage [V]
200
Max. Input Current [A]
32/32
Number of MPP Trackers
2
Number of Strings per MPP Tracker
2/2
Output (AC)
Rated AC Output Power [W]
5000
6000
8000
10000
15000
Max. Apparent Power [VA] *1
5500
6600
8800
11000
15000
Rated AC Output Current [A]@230Vac
13.1
15.7
21
26.2
39.4
Max. AC Output Current [A]
14.4
17.3
23.1
28.9
39.4
Nominal AC Voltage/ Range [V]
127V(F-N)/220V(F-F); 101.6-139.7(F-N)
NominalACGrid Frequency/Range[Hz]
50, 60/44-55, 54-65
Total Distortion Harmonic [THDi]
< 3%
Power Factor
0.8 leading～0.8 lagging
Feed-in Phases/AC Connection Phases
3/3
Efficiency
Max. Efficiency
98.8%
Euro Efficiency
98.5%
Protection
DCI Monitoring
Integrated
GFCI Monitoring
Integrated
Grid Monitoring
Integrated
AC Grounding Detection
Integrated
AC Short-Circuit Protection
Integrated
DC Insulation Resistance Detection
Integrated
DC Surge Protection
Type III
AC Surge Protection
Type III

R6 Series
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Anti-islanding Protection
AFD
AFCI Protection
Optional
Interface
AC Connection
Terminal Block
DC Connection
MC4
Display
LED+APP (Bluetooth）
Communication Port
RS232+RS485 (RJ45)+DRM(RJ45)
Communication Mode
Wi-Fi/Ethernet//4G
Load Monitoring
24/7 (Optional)
General Data
Topology
Transformerless
Nighttime Power Consumption [W]
<0.6
Operating Temperature Range
-40℃～+60℃
Cooling Method
intelligent fan Cooling
Ambient Humidity
0%～100% non-condensing
Max. Operating Altitude [m]
3000m
Noise [dBA]
<50
Ingress Protection
IP65
Mounting
Rear Panel
Dimensions [H*W*D] [mm]
558*409*234
Weight [kg]
23.7
Warranty [Year]
5 (Standard)/10/15/20/25 (Optional)
Certifications
IEC/EN62109-1/2, EN61000-6-1/2/3/4, IEC61683, IEC60068-2,
IEC62116, IEC61727, PEA/MEA,VDE0126-1-1/A1, CEI 0-21,
VDE-AR-N 4105, AS/NZS4777.2, CQC NB/T 32004, G98/G99, NBR
16149, NBR 16150, C10/11,RD1669,UNE206006,
UNE206007,EN50438
Note: *1. According to C10/C11, Max. AC Power = Rated AC Power
2. The above parameters might be slightly modified according to different gridcodes.
3. If you need more information about our product certifications, please contact oursales.

R6 Series
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R6-20K-T3-32-LV, R6-25K/30K-T4-32-LV
Model
R6-20K-T3-32-LV
R6-25K-T4-32-LV
R6-30K-T4-32-LV
Input (DC)
Max. PV Array Power [Wp]@STC
30000
37500
45000
Max. Input Voltage [V]
1100
MPP Voltage Range [V]
180-1000
Nominal Input Voltage [V]
600
Startup Voltage [V]
200
Max. Input Current [A]
32/32/32
32/32/32/32
Number of MPP Trackers
3
4
Number of Strings per MPP Tracker
2/2/2
2/2/2/2
Output (AC)
Rated AC Output Power [W]
20000
25000
30000
Max. Apparent Power [VA] *1
22000
27500
30000
Rated ACOutput Current [A]@230Vac
52.5
65.6
78.7
Max. AC Output Current [A]
57.7
72.2
78.7
Nominal AC Voltage/ Range [V]
127V(F-N)/220V(F-F); 101.6-139.7(F-N)
Nominal ACGrid Frequency/ Range [Hz]
50, 60 / 44-55, 54-65
Total Distortion Harmonic [THD]
<3%
Power Factor
0.8 leading～0.8 lagging
Feed-in Phase/AC Connection Phases
3/3
Efficiency
Max. Efficiency
98.8%
Euro Efficiency
98.5%
Protection
DCI Monitoring
Integrated
GFCI Monitoring
Integrated
Grid Monitoring
Integrated
AC Grounding Detection
Integrated
AC Short-Circuit Protection
Integrated
DC Insulation Resistance Detection
Integrated
DC Surge Protection
Type II
AC Surge Protection
Type III
Anti-islanding Protection
AFD

R6 Series
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AFCI Protection
Optional
Interface
AC Connection
Terminal Block
DC Connection
MC4
Display
LED+APP (Bluetooth）
Communication Port
RS232+RS485 (RJ45)+DRM(RJ45)
Communication Mode
Wi-Fi/Ethernet//4G
Load Monitoring
24/7 (Optional)
General Data
Topology
Transformerless
Nighttime Power Consumption [W]
<0.6
Operating Temperature Range
-40℃～+60℃
Cooling Method
intelligent fan Cooling
Ambient Humidity
0%～100% non-condensing
Max. Operating Altitude [m]
3000m
Noise [dBA]
<50
Ingress Protection
IP65
Mounting
Rear Panel
Dimensions [H*W*D] [mm]
659.4*473*240
Weight [kg]
35.5
37.5
Warranty [Year]
5 (Standard)/10/15/20/25 (Optional)
Certifications
IEC/EN62109-1/2, EN61000-6-1/2/3/4, IEC61683, IEC60068-2, IEC62116,
IEC61727, PEA/MEA,VDE0126-1-1/A1, CEI 0-21, VDE-AR-N 4105,
AS/NZS4777.2, CQC NB/T 32004, G98/G99, NBR 16149, NBR 16150,
C10/11,RD1669,UNE206006, UNE206007,EN50438
Note: *1. According to C10/C11, Max. AC Power = Rated AC Power
2. The above parameters might be slightly modified according to different gridcodes.
3. If you need more information about our product certifications, please contact oursales.